In the huge wave Lang, there was only a slight shaking of the hull, and several experts were already stunned, what this meant, it couldn't be clearer, since the hull could be so smooth in the wave Lang, the artillery was very little affected by the wave Lang, and the shells could be hit more accurately.

Lin Yuan blew a whistle, the wave gradually stopped, Lin Yuan pushed up a few switches in the cabin, and the "buzzing" sound also stopped, Lin Yuan led everyone back to the shore and asked: "Now, we are going to visit the next location, this time the number of people cannot be too much, there can only be three people." ”

The six people discussed, and three people walked out and followed Lin Yuan to another small boat, there was a turret on this ship, Lin Yuan pointed to the gun on the turret, and said with a smile: "This is a model artillery, you can try it." ”

An Englishman stepped up to him and asked, "Is there anything special about this artillery?" ”

Lin Yuan pointed to the scope erected next to the artillery and said: "You can try it, this is the scope of the artillery, you can use it to do a direct aim, aim the artillery at the target on the shore, can you do it?" ”

The Englishman walked to the side of the scope, put his eyes in front of the eyepiece, and adjusted the position of the artillery, because it was a model, and the gun body was made of wood, so the gun was very light and turned very briskly, the Englishman stopped what he was doing and said: "Jing to Jing, there is no problem, is there anything special about this artillery?" ”

Lin Yuan didn't answer directly, but said: "There are no waves in the pool, it can basically be regarded as still water, and now I want to improve the sea state." As he spoke, Lin Yuan whistled, and the impeller by the pool turned again, setting off waves of Lang.

Lin Yuan said: "Now you aim and give it a try." ”

The Englishman held the handrail tightly, his face turned pale, and said with a smile: "Don't be kidding, the hull of the ship is shaking so much, how can you aim accurately!" ”

Lin Yuan moved a switch on the side of the turret, and there was a familiar "buzzing" sound under the turret, and the Englishman smiled: "If you apply the stabilization technique of the ship just now, aiming will naturally not be a problem." ”

Lin Yuan smiled again: "Now let's let the boat move, I wonder if you can complete the aiming?" ”

The British said: "I have not been trained in naval artillery, and it is very difficult for me to achieve such an aiming of a moving target against a static target." ”

Lin Yuan said: "Don't be busy saying you can't, you might as well give it a try." Then Lin Yuan picked up a red flag and waved it at the shore, ten strong men took the oars, walked to the boat, and began to row the oars, the boat slowly moved into the distance, but the British found that the turret was actually slowly turning, and the muzzle was still aimed at the target on the shore!

The Englishman leaned in front of the scope, put his eyes on the eyepiece, and was surprised to find that the scope was still aimed at the target, and there was not much movement, and the Englishman said in surprise: "How did this happen?" ”

Lin Yuan said with a smile: "This is the secret of the accuracy of our Ryukyu fleet's artillery!" ”

When the British wanted to ask again, Lin Yuan had already left the boat with people and returned to the shore, Lin Yuan was not in a hurry to answer everyone, and said that it was already lunch time at this time, so let everyone go to eat first.

In the afternoon, Lin Yuan disappeared again, and he arranged a sightseeing tour for the envoys of the four countries, this time visiting the "Fifteen Years of Blood and Tears: 1879-1894" theme memorial hall, the collection of items including evidence of Japan's crime of selling Ryukyu girls, evidence of forcing Ryukyuan people to join the Japanese army, participating in the war of aggression, etc., fully illustrating the brutality of Japanese colonial rule.

The envoys of the four countries originally thought that Lin Yuan would do another show in the evening, but they did not expect to be arranged to watch a traditional Ryukyu song and dance performance in the evening, and everyone was anxious to survive the night, and the next day, Lin Yuan was finally going to show.

In the morning, they were taken to the room where they watched the movie, and a large table was set up at the front desk, Lin Yuan was already sitting behind the table, and when everyone was seated, Lin Yuan stood up and said: "I believe that everyone already wants to know the principle of the content we show, and today I will solve this mystery for you." ”

As he spoke, Lin Yuan took out a globe-like thing from under the table, the middle was a disc that was horizontal with the tabletop, there was a vertical ring outside the disk, the disc was connected to this ring by a shaft, the outside of the ring was a horizontal ring, the inner ring was also connected to the outer ring through a shaft, there was a shaft on the outer ring, and it was connected to the base through a bearing, and the inner ring, the outer ring, and the geometric center of the disc intersected at the same point.

Lin Yuan said with a smile: "I don't know if anyone knows about Lu Dao?" ”

Lin Yuan saw everyone shaking their heads, and then said, "This thing is called a gyroscope." "Gyroscopes were made in 1875, but they were used to verify the rotation of the earth, so not many people know the Tao.

Lin Yuan turned on a switch, the disc made a "buzzing" sound, and began to spin at high speed, Lin Yuan asked, "If I shake the base, how will the axis of this disc change?" ”

The people on the field are all masters of physics, and a few have already said: "The axis will keep its spatial orientation and will not change." ”

Lin Yuan nodded, pointed to the axis of the outer ring, and said with a smile: "If I hang a heavy object on this axis, how will the gyroscope change?" ”

After a discussion, the people in the audience said, "The axis of the outer ring will not sink towards the ring, but the axis of the inner ring will turn an angle. ”

Lin Yuan said: "We have deduced the two major characteristics of the gyroscope, one is the fixed axis, the other is the precession, now, let me explain to you what we see today, first of all, the ship that remains stable in the sea, think about it, if the ship is fixed on the axis of the gyroscope, then when the hull is pushed by the sea, will it change very little?" ”

Everyone nodded understandingly, and Lin Yuan said: "There is also the artillery that can automatically aim at the target, when the hull moves, the axis of the gyroscope will change, if this shaft is connected to a sliding rheostat, when the position of the shaft changes, the resistance value will change, and then we connect this sliding rheostat into the circuit, and the change in resistance will be converted into a change in voltage or current." ”

"Then this voltage or current is sent to the motor, and then the motor will stabilize the gun at its original position according to this current value, which makes the gun automatically aimed at the target?"

The eyes of a few people below have begun to light up, Lin Yuan thought to himself: "These things are enough for you to be busy for a while, the gyroscope has installation errors, with your current level of machining, it is still difficult to make an accurate gyroscope." ”

At this time, someone below asked, "How is the axis of your gyroscope connected to the ring?" What bearings are used? ”

Before the words fell, someone stood up and asked: "Can you be more specific about the motor that you said adjusts the position of the artillery according to the change of current?" ”

Lin Yuan shrugged his shoulders and said with a smile: "No comment!" ”

When everyone saw Lin Yuan's appearance, they were not too disappointed, for them, many times, breakthroughs just needed an inspiration.

Lin Yuan thought to himself: "This problem has been solved, and tomorrow, the problem of high-speed performance will be solved." ”